Types of ES

A forces applied when the objects involved are in direct contact.

• Contact forces

• Normal forces

• Non-contact forces

Generated between two bodies in contact with each other by rubbing between them.

• Push or pull

• Tension

• Elasticity

• Friction

Is the force usually exerted by a surface on an object that is resisting against it.

• Friction

• Normal force

• Elasticity

• Tension

Is the force of attraction that causes an apple to fall to the ground

• Tension force

• Applied force

• Gravitational force

• Normal force

Tags

NGSS.MS-PS2-4

What force holds the planets in motion around the sun?

• Magnetic
• Electrical
• Gravitational
• Air Resistance

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

What force ultimately slows the roller coaster to a stop?

• Applied
• Normal
• Friction
• Magnetic

What type of force is holding this balloon to the wall?

• Applied
• Gravitational
• Magnetic
• Electrical

What type of force?

• Magnetic
• Gravitational
• Applied
• Normal

Tags

NGSS.MS-PS2-3

Some forces can act over a distance, and others can only act by contact.  Which type of force can act only when two objects touch each other?

• gravitational 
• frictional
• electrical 

Which sentence below describes a contact force?

• A baseball bat hits a baseball

• A book falls to the floor

• A leaf floats in the air and falls to the ground.

• A magnetic force pulls a paper clip toward a magnet

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2